diff --git a/.drone.yml b/.drone.yml
index 3585569..1359bb1 100644
--- a/.drone.yml
+++ b/.drone.yml
@@ -112,7 +112,7 @@ steps:
   - name: Run backend tests
     image: python:3.13-slim
     commands:
-      - apt-get update && apt-get install -y --no-install-recommends gcc libmariadb-dev python3-dev build-essential && rm -rf /var/lib/apt/lists/*
+      - apt-get update && apt-get install -y --no-install-recommends gcc libmariadb-dev pkg-config python3-dev build-essential && rm -rf /var/lib/apt/lists/*
       - pip install --no-cache-dir -r requirements.txt
       - pip install --no-cache-dir pytest pytest-asyncio pytest-xdist httpx aioresponses fakeredis
       - pytest tests/ -x -q